Re: Blank nodes must DIE! [ was Re: Blank nodes semantics - existential variables?]

On 03/09/2020 03:43, Cox, Simon (L&W, Clayton) wrote:
>
> Dan Brickley wrote (a while back):
>
> ØOn Thu, 23 Jul 2020 at 19:50, Patrick J Hayes <phayes@ihmc.us 
> <mailto:phayes@ihmc.us?Subject=Re%3A%20Blank%20nodes%20must%20DIE!%20%5B%20was%20Re%3A%20Blank%20nodes%20semantics%20-%20%20existential%20variables%3F%5D&In-Reply-To=%3CCAFfrAFqgq7JxxwzEhYoMV70haRznXkjLBiOwhQUjwGJ0S0vsug%40mail.gmail.com%3E&References=%3CCAFfrAFqgq7JxxwzEhYoMV70haRznXkjLBiOwhQUjwGJ0S0vsug%40mail.gmail.com%3E>> 
> wrote:
> Ø
> Ø> Excellent. I have thought for some time that this way of using 
> datatyping
> Ø> would be the right way to go. Congratulations on having actually 
> done it :-)
> Ø>
> Ø
> ØThis is really interesting. Every couple of years I stumble across UCUM (
> Øhttp://unitsofmeasure.org/trac ->
> Øhttp://unitsofmeasure.org/trac/wiki/TermsOfUse) before being scared 
> away by
> Øthe prickly terms of use document. It is not a document that seems to
> Øwelcome re-use.
> Ø
> ØDan
>
> I’ve attempted to clarify this with Gunther Schadow, but can’t get a 
> response.
>
> Meanwhile, I was pointed to this service which does quantity 
> conversions based on UCUM codes:
>
>   * Form UI - https://ucum.nlm.nih.gov/ucum-lhc/demo.html
>   * API - https://ucum.nlm.nih.gov/ucum-service.html
>
> FWIW QUDT now has basic UCUM support as well - 
> https://github.com/qudt/qudt-public-repo/blob/master/schema/SCHEMA_QUDT-v2.1.ttl#L2924 
>
>
> I peered into the UCUM Terms of Use document and I believe this is the 
> relevant clause:
>
>   * 5) UCUM codes and other information from the UCUM table may be
>     used in electronic messages communicating measurements without the
>     need to include this Copyright Notice and License or a reference
>     thereto in the message (and without the need to include all fields
>     required by Section 7 hereof).
>
> So I think we are in the clear to use UCUM codes in the manner that 
> has been discussed in this conversation.
>
I disagree.

That just allows exchange of any /measurements/, it doesn't allow use of 
UCUM codes within metadata. Any service which, for example, provided 
metadata on units of measures and included UCUM codes as part of that 
metadata would be in violation. Assuming it including non UCUM metadata 
then it would violate the "not add any new contents" element of clause 
2. If you kept the UCUM codes separate and included /all/ the fields 
required then you might be able to claim that as the "master term 
dictionary" use allowed under clause 7 but then would have to show how 
you were satisfying the notice requirement which has no such 
corresponding allowance for "electronic messages".

I am not a lawyer and so what I say here carries no value. Perhaps the 
QUDT folks, if they are now using UCUM, have a documented legal opinion 
that suggests more flexible reuse is possible.

Dave

> *Simon J D Cox *
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